JP2000088444A - Heat insulation door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a surface of a door from being distorted by closing an open end face of a door housing having a door front side face material having a drawing part and a door rear side face material with a door cap, and filling a foamable heat insulator therein. SOLUTION: The door 28 is formed by closing an open end face of a door housing having a door front side face material 33 and a door rear side face material 34 with a door cap 35, and then filling a foamable heat insulator from a hole 36 of the material 34. A lengthy face part 39 is formed on a rear side of the cap 35, and the part 39 of the cap 35 is brought into close contact with a rear face of an end (strain generating site) of the material 33 in the state that the cap 35 is mounted at the material 33. Thus, if the insulator is filled in the housing, the insulator is filled substantially simultaneously in the rear face of the end of the material 33 so that a strain is not concentrated caused by generating a specific filling end local point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a foamed heat insulating material is filled in an internal closed space with an open end face of a door housing composed of a door front side material and a door rear side material closed with a door cap. Related to thermal insulation doors.

[0002]

Conventionally, refrigerators have been provided with a drawer-type storage for facilitating removal of the storage. FIG. 10 shows a door of this type of storage. That is, the door 1 forms a door housing composed of a door front side surface member 2 made of a steel plate and a resin door back side surface member 3, and the open end surface of the door housing is closed with the door cap 4. , And is formed by filling a foamed heat insulating material into an internal closed space. In this case, the foamable heat insulating material is injected from a hole 5 formed in the door back side surface material 3.

FIG. 11 shows a door cap 4. In FIG. 11, a rising portion 6 is formed on the entire periphery of the back surface of the door cap 4, and a long bank 7 is formed on the front edge so as to face the rising portion 6. .
A plurality of ribs 8 are integrally formed at a predetermined interval on the front side of the bank portion 7, and a face material insertion groove 9 is formed between the rib 8 and the rising portion 6 as shown in FIG. ing. In this case, the end of the door surface side material 2 is inserted into the surface material insertion groove 9, and the end of the door surface side material 2 is inserted between the rising portion 6 and the rib 8 in the inserted state. It becomes the form pinched by.

[0004] As shown in FIG. 10, a recessed drawn portion 10 is formed in the door front side member 2, and a handle 11 is attached to the drawn portion 10. By the way, a distortion is generated around the drawn portion 10 formed on the door front side surface member 2 and slightly deformed from the original design shape. That is, as shown in an exaggerated manner in FIG. 13, a portion corresponding to the drawn portion 10 at the end of the door front side member 2 is pulled toward the drawn portion 10 (about 1 to 2 mm), and FIG. As shown exaggeratedly, it is also pulled on the back side (about 1 mm). This is because the central portion of the drawn portion 10 has the largest amount of drawing, and the tensile force toward the central portion of the drawn portion 10 is large.

In this case, when the end of the door front side member 2 is sandwiched between the rising portion 6 of the door cap 4 and the rib 8, the distortion at that portion is corrected, but the rib 8
The strain is distributed in the area where there is no. Such distortions are small dispersion distortions and are not noticeable.

However, at the time of injecting the foaming heat insulating material through the hole 5 formed in the door back side surface material 2, the foaming heat insulating material is filled from the center to the outside. At this time, the foaming heat insulating material filled on the back surface side of the end portion of the door front and side surface material 2 flows so as to sequentially fill the space between the ribs 8, and the foaming heat insulating material is filled with the ribs 8. There is a time difference until each space between the rib and the rib 8 is filled. Therefore, the filling end point of the foaming heat insulating material is generated at one or more joints between the door cap 4 and the door surface material 2. For this reason, although the distortion of the previously filled portion is corrected by the filling pressure, the distortion is concentrated at the filling end point. As a result, the surface of the door may be broken or wavy due to the concentrated distortion, or a rib mark may appear, which may be a factor of lowering the appearance quality of the product.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to close an open end surface of a door housing having a draw-formed portion and comprising a door front and rear surface material and a door cap with a door cap. It is an object of the present invention to provide an insulated door which can prevent a surface of the door from being distorted in a configuration in which the door is filled with a foamable heat insulating material.

[0008]

SUMMARY OF THE INVENTION According to the present invention, an inside closed space is filled with a foaming heat insulating material in a state where an open end face of a door housing composed of a door front side material and a door rear side material is closed with a door cap. In the heat-insulating door having the configuration described above, a drawn-formed portion is formed on the door surface material, and the door cap is formed along the edge on the back surface side of the edge of the door surface material to which the door cap adheres. It is formed to have a long surface portion that is in close contact with the long surface (claim 1).

[0009] Now, due to the fact that a drawn part is formed on the door surface side member, a distortion is generated around the door forming part. Therefore, at the end corresponding to the drawn part at the end of the door surface side member. Is distorted.

When the door cap is attached to the open end face of the door housing comprising the door front side material and the door back side material having the drawn portion, the long planar portion formed on the door cap is covered with the door surface. It comes into close contact with the end of the side material, that is, the back side of the strain generation site. In this state, when the foamed heat insulating material is filled in the closed space inside the door housing, the foamed heat insulating material is almost simultaneously filled on the back side of the end portion of the front surface side material of the door. The filling end point does not occur, and the distortion of the door surface material can be prevented from being concentrated on a specific portion.

In the above structure, the door cap may be formed such that the elongated planar portion is formed at least at a portion corresponding to the drawn portion of the door surface side member. According to such a configuration, since the long planar portion adheres to the back side of the portion corresponding to the drawn portion on the back side of the end portion of the door front side material, distortion of the door front side material is concentrated at a specific portion. Can be reliably prevented.

[0012] Further, provision may be made for provisional engagement means for provisionally holding the two by engaging the door cap with the door cap mounted on the front surface side member. According to such a configuration, when the door cap is attached to the door front side member, the temporary engaging means temporarily holds the door front side member and the door cap by engagement, so that the door housing composed of both can be easily formed. The door can be assembled, and the efficiency of assembling the door can be increased.

[0013] A reinforcing notch for reinforcing a portion corresponding to the long planar portion of the door cap forming die may be formed in the long planar portion of the door cap. 4).

According to such a configuration, the portion for forming the long planar portion in the mold for forming the door cap has a long slit shape and the strength is weak.
By forming the reinforcing notch in the elongated planar portion, the wall between the portions corresponding to the elongated planar portion in the mold is bridged, so that the portion can be reinforced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is a perspective view of the entire refrigerator. 2, a refrigerator 21 is provided with a refrigerator compartment 22, a vegetable compartment 23, an ice making compartment 24, a temperature switching compartment 25, and a freezing compartment 26 from above, which are closed by doors 27 to 31, respectively.

Here, the vegetable compartment 23, the ice making compartment 24, the temperature switching compartment 25, and the freezing compartment 26 are configured as drawer-type storages. It is designed to be pulled forward.
In this case, a handle 32 is provided on the doors of the vegetable compartment 23 and the freezing compartment 26, and the vegetable container or the frozen container (not shown) is drawn forward by the handle 32.

FIG. 1 shows a door 28 (corresponding to a heat insulating door) of the vegetable compartment 23. In FIG. 1, the door 28 of the vegetable compartment 23 forms a door housing including a door front side surface member 33 made of a steel plate and a resin door back side surface member 34, and has both ends open surfaces of the door housing. After closing with the door cap 35 made of resin,
It is formed by filling a foamed heat insulating material into an internal closed space. In this case, the foaming heat insulating material is injected from a hole 36 formed in the door back side surface material 34.

The door surface side member 33 is formed by press-forming a steel plate to improve the appearance, and has a front surface curved and both ends folded. A draw forming part 37 is formed in the upper part of the front surface of the door surface side member 33, and the handle 32 is mounted on the draw forming part 37.

Next, the structure of the door cap 35 will be described. FIG. 3 shows the front of the door cap 35, and FIG. 3 and 4, a rising portion 38 is formed on the entire peripheral portion on the back side of the door cap 35, and a long planar portion 39 is formed on the front edge portion so as to face the rising portion 38. The elongated surface portion 39 and the rising portion 38 form a face material insertion groove portion 40 having a predetermined gap (see FIG. 5). Further, a bent portion 41 is formed at an end of the long planar portion 39,
A plurality of ribs 42 are formed on the front side of the bent portion 41. In this case, the dimension between the rib 42 and the rising portion 38 is formed at the same gap as the face material insertion groove 40. In addition, the long planar portion 39 is provided corresponding to a portion where the distortion by the drawn portion 37 of the door front side surface member 33 appears in the related art.

Here, the long planar portion 39 of the door cap 35 is used.
Is formed with a reinforcing notch 43 intermittently. This reinforcing notch 43 is provided with a door cap forming die (not shown).
Is formed in order to bridge and reinforce between the wall surfaces of the slit-shaped portions corresponding to the reinforcing notches 43, and the depth thereof is formed by the rising portions 38 and the elongated planar portions 39. The dimension is set so as not to affect the depth of the face material insertion groove 40. Specifically, the depth h of the reinforcing notch 43 shown in FIG. 5 is set to a size not exceeding the height position of the rising portion 38.

In the door cap 35 formed as described above, the end of the door surface side member 33 is inserted into the surface member insertion groove 40 formed by the rising portion 38 and the elongated surface portion 39. In the inserted state, the long planar portion 39 comes into close contact with the back surface of the door front side surface member 33.

By the way, as described above, due to the fact that the draw forming portion 37 is formed on the door surface side member 33, a distortion occurs around the draw forming portion 37. For this reason, in the door surface side member 33, the periphery of the draw forming portion 37, particularly the end portion in close contact with the door cap 35 is distorted and slightly deformed from the original design shape. However, since the distortion is slight, the door front side surface member 33 is connected to the surface material insertion groove portion 40 between the rising portion 38 of the door cap 35 and the long surface portion 39.
, The long planar portion 39 comes into close contact with the back surface of the door front side member 33.

In the door housing assembled as described above, when the foaming heat insulating material is filled through the hole 36 of the door back side surface material 34, the foaming heat insulating material diffuses from the center toward the outside in the closed space. I do. At this time, since the long surface 39 of the door cap 35 is in close contact with the back surface of the end portion of the door surface member 33, the back surface of the door surface member 33 is almost simultaneously filled with the foaming heat insulating material. Will be. This allows
Since the specific filling end point does not occur due to the time delay of the filling, the distortion of the door surface side member 33 is reduced.
And the door cap 35 does not concentrate on the joint.

According to such an embodiment, the elongated surface portion 39 is formed on the door cap 35 attached to the end of the door surface side member 33, and the door cap is formed on the end of the door surface side member 33. 35
Is attached to the back surface of the door front side member 33, so that the filling end point is set at the joint between the door cap and the door front side member when filling the foaming heat insulating material. Unlike the conventional example in which one or a plurality of locations occur, a specific filling end point does not occur, and distortion does not concentrate on the joint between the door cap 35 and the door surface side member 33. This can effectively prevent the surface from being deformed.

Further, the long planar portion 39 of the door cap 35 is provided.
Is formed intermittently with a reinforcing notch 43,
Even if it is necessary to form a long slit corresponding to the long surface portion 39 in the mold for forming the door cap,
The wall surfaces on both sides of the slit are bridged in a row so that the strength can be improved.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS.
The same reference numerals are given to the same portions as those of the embodiment, and the description is omitted. The second embodiment is characterized in that the assemblability of the door 28 is improved.

That is, in FIG. 6 showing the back surface of the door cap 35 and FIG. 7 showing the cross section of the main part, an engaging claw is provided on the front surface of the bent portion 41 of the long planar portion 39 formed on the door cap 35. A portion 44 (corresponding to temporary engagement means) is formed so as to protrude.

On the other hand, in FIG. 8 showing the plane of the door surface side member 33 and FIG. 9 showing the front surface thereof, a portion of the door surface side member 33 corresponding to the bent portion 41 of the long surface portion 39 of the door cap 35 is shown. Is formed with a cut-and-raised portion 45 (corresponding to a temporary engagement means), and when the door cap 35 is attached to the end of the door front-surface side member 33, the cut-and-raised portion of the door front side member 33 is formed. 45 engages with the engaging claw portion 44 of the door cap 35 so as to be in a temporary holding state.

According to the second embodiment, the door surface side member 33 and the door cap 35 are temporarily held by engagement, so that the same operation and effect as those of the first embodiment can be obtained. In addition, the door housing including the door surface side member 33 and the door cap 35 can be easily assembled, and the assembling operability of the door can be improved.

The present invention is not limited to the above embodiment, but may be applied to an openable door.

[0031]

As is clear from the above description, according to the heat-insulating door of the present invention, the door cap for closing the open end face of the door housing composed of the door front side material and the door rear side material is provided. At least a portion corresponding to the drawn portion of the front and side surface material of the door has a long surface portion that closely adheres to the long surface along the end portion on the rear surface side of the end to which the side material adheres. Therefore, in the configuration in which the open end face of the door housing composed of the door surface side material and the door back side surface material having the drawn portion and the door cap is closed with the door cap and filled with the foaming heat insulating material, the door surface is distorted. This has an excellent effect of preventing the occurrence of cracks.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a door showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a refrigerator.

FIG. 3 is a front view of a door cap.

FIG. 4 is a rear view of the door cap.

FIG. 5 is a sectional view of a main part of the door cap.

FIG. 6 is a rear view of a door cap according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a main part of the door cap.

FIG. 8 is a plan view of a door front side material.

FIG. 9 is a front view of a door front side material.

FIG. 10 is an exploded perspective view of a door showing a conventional example.

FIG. 11 is a rear view of the door cap.

FIG. 12 is a sectional view of a main part of a door cap.

FIG. 13 is a front view showing a peripheral portion of a drawn portion of a door front side material;

FIG. 14 is a plan view showing a peripheral portion of a drawn portion of the door front side material.

[Explanation of symbols]

21 is a refrigerator, 28 is an insulated door, 33 is a door surface material, 34
Is the door back side surface material, 35 is the door cap, 37 is the drawn part,
Reference numeral 39 denotes an elongated planar portion, 40 denotes a face material insertion groove, 43 denotes a reinforcing notch, 44 denotes an engaging claw (temporary engaging means), and 45 denotes a cut-and-raised portion (temporary engaging means).

Claims (4)

[Claims] An insulated door having a configuration in which an internal closed space is filled with a foaming heat insulating material in a state where an open end face of a door housing including a door front side material and a door back side material is closed with a door cap, A draw forming portion is formed on the door surface material, and the door cap is a long surface that closely adheres to the back surface side of the end of the door surface material that the door cap adheres to along the edge. An insulated door, characterized in that it is formed with a scale-like portion. 2. The heat-insulating door according to claim 1, wherein the door cap has a long planar portion formed at least in a portion corresponding to a drawn portion of the door surface material. 3. The heat insulating door according to claim 1, further comprising a temporary engaging means for temporarily holding the door cap with the door cap mounted on the front surface side member. 4. A notch for reinforcing a portion corresponding to the long surface portion of the door cap forming die is formed in the long surface portion of the door cap. The heat-insulating door according to claim 1.